Investigation of thermal and flow fields above and below the air-water interface during natural convection

TL;DRAbstract

Present dissertation describes the turbulent convection in horizontal layers of air and water separated by an evaporative shear-free water surface during natural convection. A detailed analysis of the hydrodynamic turbulent structure on water and air sides is presented in this study. The major portion of the research comprised of experimental investigation in addition to simulation of simultaneous airside and waterside velocity fields. The experimental measurements were made using non-intrusive state-of-the-art techniques, namely particle image velocimetry (PIV) and laser induced fluorescence (LIF) for instantaneous measurements of velocity and temperature fields, respectively. The numerical study shows organized bulk vortical motions on air and water sides. The results also show that for unstable thermal stratification the magnitude of the airside velocities is an order of magnitude higher than the waterside velocities. The experimental results show that the water and air flow fields

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